Electric lock



' I J. A. KYLE.

ELECTRIC LOCK. APPLICATION FILED OCT. 7; I919:

Patented June 15, 1920.

2 SHEETS-SHHT 'l.

UNITED STATES PATENT OFFICE.

JAMES A. KYLE, OF SALT LAKE CITY, UTAH.

ELECTRIC LOCK.

certain new and useful Improvements in Electric Locks, of which'the following is a specification.

This invention relates to electric locks intended more particularly for use upon automobiles though as this description proceeds it will be seen that the lock is of general.

application; capable of use in any place where it is desired to look a part against movement by electrically controlled means.

Further objects and advantages of the invention will beset forth in the detailed description which now follows.

In the accompanying drawlng Figure 1 is a diagrammatic view of the lock and its controlling switches;

Fig. 2 is a perspective view of the lock; and a Fig. 3 is a detailed view of the rear axle of an automobile illustrating one appllcatlon of the lock.

Referring to the drawing it w1ll be seen that the lock comprises a plunger bar 5 that constitutes the core of two solenoid magnets,

one of which is indicated at 6 and which will hereinafter be referred to as the locl ing magnet and the other of which is indirated at 7 and which will hereinafter be-referred to as the unlocking magnet. ,Detent.

solenoid magnets 8 and 9 have cores 10 and 11 which drop by gravity into corresponding notches l2 and 13 of the core 5 in a manner which will hereinafter be set forth. The winding 14 of the magnet 6 is connected by a conductor 15 with a contact element 16 of a push button 17, said contact element being adapted to contact with a contact point 18 that is in turn connected by a conductor 19 with the negative side of a storage .battery or other source of electrical energy indicated at 20. The other side of the winding 14-is connected through a conductor 21 and a conducto'r 22 to the other side of the battery 20.

The push button 17 also carries a contact 23 that is connected by a conductor 24 with the winding 25 of the magnet 8. The other side of this. winding is connected by a conductor 26 with the conductor 22 Upon initial movementof the push button 17 contact '23 touches a contact 27 and a circuit is completed from 27 through a conductor 28 and Specification of Letters Patent. P t nt J e 5, 1920 Application filed October 7, 1919. Serial No. 328,997.

a conductor 29 to the negative side, of the battery 20. This energizes the magnet 8 and l1fts the core 10" thereof from the notch 12. Addltional downward pressure upon the push button 17 brings the contacts 16 and 18 core 5 toward the left in the negative side-of the battery. This energlzes the magnet 9 and lifts the core 11 thereof from ,the notch 13. A further .down-' ward movement of the push button 30 will bring contact points 38 and 39 together and energize unlocking magnet 7 through a conductor '46 which constitutes a continuation of sad winding and through a connection 41,

by which said winding is connected to the positive side of the battery 20. Thereupon the plunger 5 willbe retracted and will be i looked in its retracted position when the core 10 of magnet 8 drops into the notch 12. To support the weight of the core 5 a swingmg link 42 is pivotally connected to said core at 43 and this link is in turn mounted to swing from a transverse rod 44 that is mounted in posts or other supports indicated at'45. 46 is a lock which may be a Yale lock and the bolt 47 of which is adapted to engage the unlocking push button 13 so that after the device is locked it can not be unlocked except by some authorized person having a Yale key.

' It is manifest that this look is of general application and that it may be used in anv suitable relation to look a mg. ()ne of its greatest features of usefulpart against mov-.

ness is as a lock for automobiles to prevent the same -from being stolen and it is manifest that in order to use'the same the plunger 5 may be caused to engage tiny desired part of the automobile to hold the same against moving. It is manifestly impossible to illustrate the many different positions in which the lock might be placed, It is apparentupon the face of it that it only needs to-be' suitably positioned to engage a part of the steering gear, or to engage a part of the engine mechanism. I have therefore contented myself with illustrating a single application of these locks and for purposes of explanation have shown the same mounted upon the rear axle of an automobile in such position that the plunger 5 may be projected through the wall of a brake drum indicated at 4:8 and engage blocks 49 carried by the wheel 50. It is manifest that if the plunger 5 be projected into the path of movement of the blocks 49 the wheel can not turn.

It is to be understood that the invention is not limited to the precise construction set forth but that it includes within its purview whatever changes fairly come within either the terms or the spirit of the appended claims.

Having described my invention, what 1 claim is 1. A device of the character described comprising a plunger rod constituting a core, a pair of solenoid magnets associated therewith, one of which constitutes a locking magnet and the other of which consti-- tutes an unlocking magnet, oppositely directed notches formed in said core, a pair of detent solenoid magnets having cores adapted to engage in said notches respectively, a pair of circuit closing elements each of which is associated With one of the detent magnets, a rotative element to be locked and members carried thereby into the path of movement of which said core is projected by the locking magnet and held in such position by one of the detent magnets the other of said detent magnets holding said core against movement when withdrawn from the path of movement of said members by the unlocking magnet.

2. A look of the character described comprising a pair of solenoid magnets, a common core for said magnets, a swinging arm by which said core is supported, a pair of horizontal oppositely directed notchesformed in the core, a pair of vertical detent solenoid magnets and cores movable in one direction under the influence of the detent magnets and movable by gravity in the other direction to engage in said notches respectively.

3. A device of the character described comprising a longitudinally movable plunger rod, a pair of solenoid magnets for which said plunger rod constitutes a core, oppositely directed notches formed in said core, detent solenoid magnets having cores adapted to engage in said notches respectively, a pair of push buttons, each of which controls a pair of sets of contact elements, one set of contact elements of each push button being included in circuits controlling one of the detent magnets and the other set of contact elements of said push button being included in circuits controlling one of the first named solenoid magnets, said sets of contact elements being so arranged as to successively come into operation upon movement of the push button.

4. In a device of the character described the combination with a horizontally movable plunger, of a pair of horizontal solenoid magnets for which said plunger constitutes a core, one of said magnets constituting a locking magnetand the other of said magnets constituting an unlocking magnet, a pair of oppositely directed notches formed in said core, a pair of vertically disposed detent solenoid magnets having cores movable by gravity to engage in said notches and movable under the influence of said detent magnets out of said notches, a pair of push buttons and electric circuits including said push buttons and the cores, each of said push buttons controlling a, pair of circuit closing elements, one of which when closed energizes one of the detent magnets and the other of which when closed energizes one of the first named magnets, said circuit closing elements being adapted to come into operation successively and those circuit elements which control the detent magnets coming into operation ahead of the circuit elements which control the locking and unlocking magnets respectively.

In testimony whereof I afiix my signature in the presence of two witnesses.

JAMES A. KYLE. lVitnesses:

VIRGINIA KYLE, THOS. O. SHEGKELL. 

